Authentication Tester
Verify your signing code and build API requests β all from the browser. Your credentials stay local and are never sent to any server.
Signature Tester
Verify your HMAC-SHA384 signing code. Enter your key and secret, then compare the three header values with your code's output.
Your credentials stay in the browser β nothing is sent to any server.
Request Builder
Build a signed API request. Generates a ready-to-run curl command with all auth headers computed.
Your credentials stay in the browser β signing is done locally via Web Crypto API.